National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-9923 Detail

Current Description

pax_decode_header in sparse.c in GNU Tar before 1.32 had a NULL pointer dereference when parsing certain archives that have malformed extended headers.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 7.5 HIGH
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (V3.0 legend)
Impact Score: 3.6
Exploitability Score: 3.9


Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

CVSS v2.0 Severity and Metrics:

Base Score: 5.0 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 10.0


Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Partial
Additional Information:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://git.savannah.gnu.org/cgit/tar.git/commit/?id=cb07844454d8cc9fb21f53ace75975f91185a120 Mailing List Patch Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00077.html Mailing List Third Party Advisory
http://savannah.gnu.org/bugs/?55369 Permissions Required Third Party Advisory
https://bugs.launchpad.net/ubuntu/+source/tar/+bug/1810241 Issue Tracking Patch Third Party Advisory

Technical Details

Vulnerability Type (View All)

  • NULL Pointer Dereference (CWE-476)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:gnu:tar:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (excluding)
1.32

Configuration 2 ( hide )
 cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-9923
NVD Published Date:
03/22/2019
NVD Last Modified:
04/24/2019